Binding for punched sheets



April 19, 1955 MAR-rm 2,706,483

BINDING FOR PUNCHED SHEETS Filed March 12, 1951 2 Shee'ts-Sheet 1 L I Q I I A I W IN VENTOR a RAYMO/W mom/(mm BY MQ/M ATTORNEYS April 19, 1955 R. s. MARTIN 2,706,483

BINDING FOR PUNCHED SHEETS Filed March 12, 1951 2 Sheets-Sheet 2 ATTORNEYS RAWOIVD SIMONNE MARTIN United States Patent 2,706,483 BINDING FOR PUNCHED SHEETS Raymondc Simonne Martin, Paris, France Application March 12, 1951, Serial No. 215,156 2 Claims. (Cl. 129-9) Bindings and files for loose leaves having a split back and curved posts forming retaining rings are known in which the two hinged parts of the back may change in' position through a movement of translation in order to enable the shifting to take place of the left posts in relation to the right posts and, consequently, permit the insertion and removal of the sheets. These bindings are comparatively expensive since they call for the creation of a very stiff back with two hinged portions.

My invention enables the bindings to be provided with the back consisting of one single part and that offers all the benefits of hitherto standard types of bindings.

For this purpose, the two sets of opposite posts are fitted up respectively on two platens that are joined together by means of a small links so as to form a connection with parallel movements, with these small links being slanting in the locked position and at right angles to the platens when in the opened position.

When the invention is adapted to a binding or file with sheets arranged in rows, of the pattern known as with visible index-slips, provision may be made, according to a favourable method of carrying it out, to give the small linking bars three positions instead of two: one slanting locking position, a position when open at right angles to the platens and a second slanting position, symmetrical with the first one in relation to the open position.

Movement between the two first positions provides for the insertion and removal of an index-slip, but the combined first and third position, provided the shifting of the platens between the given positions equals the pitch of the consecutive posts, enables the shifting to take place of a whole parcel of slips of the file, without having to remove them and put them back, in order to leave room for an interpolated index-list or, on the other hand, to fill up the space left empty through the cutting out of an actual index-slip.

It will be easy to obtain a clear understanding of the practical working of my invention after reading the following disclosure in reference to the attached drawings that are given as non-restrictive examples.

Fig. 1 is a front perspective view on a reduced scale of a binder according to the present invention.

Fig. 2 is a plan view of a section of the binder showing in detail a portion of the sheet retaining elements.

Fig. 3 is a similar view to Fig. 2, but with the post platens in a reversed position; and

Fig. 4 is a perspective view on a smaller scale of a section of the binder with most of the posts removed for showing the relative position thereof when the right hand platen is moved downwardly from an upper position.

According to the method of construction shown by Figures l to 4, the file is provided with a back 1 in one single piece and two sides 2.

There are three patens, 5, 6 and 5a, the fixed platen 6 being located between two movable platens 5 and 511 that carry respectively posts 3 and 4 and that are connected to the platen 6 by two sets of links 7, 7a the first of which corresponds to a shifting of two pitches and the second set to the shifting of a single pitch. That is by sliding platen 5 from its position against platen 6 and through the are controlled by the pivoted link 7 until platen 5 again contacts platen 6, the posts 3 will be moved downwardly or upwardly each a distance equivalent the space between three of the posts 4. Likewise platen 5a can be slid from a position against platen 6 through the are controlled by pivoted links 7a until platen 5a again contacts platen 6. Thus posts 4 will be moved a distance equal to the space between two posts 3. When said platens 5 and 5a are slid away .from platen 6 as shown in Fig. 1, posts 3 and 4 are separated in order that slips 8 can be added or taken from said posts as desired. In order to shift a parcel of slips by two pitches,

"ice" the platen 5a is left in the position shown in Figure 2 and action is taken on theplaten 5; in order to get a shifting of one pitch, this platen is left in the position of Figure 2 and the platen 5a is operated; if it is desired to shift by three pitches, work is done simultaneously, in the reverse direction, on the two platens 5, 5a.

The links 7, 70 might be given the same length corresponding to one or several pitch lengths.

It goes without saying that alterations may be brought to the method of carrying out my invention as described without going beyond the frame of this invention.

I claim:

1. A loose-leaf binder comprising a cover, an elongated platen fixedly mounted on the central interior portion of the back of said cover, a pair of elongated platens each movably positioned parallel to and on opposite sides of said fixed platen, a series of similar parallel spaced apart links each pivotally connected at one end to said fixed platen and at their opposite end to one of said movable platens, a second series of similar parallel spaced apart links each pivotally connected at one end to said fixed platen and at their opposite end to the other of said movable platens, two corresponding series of parallel equally spaced curved prongs adapted for receiving the loose leaves and each series extending longitudinally of one of said platens with each prong mounted at one end to its respective platen and extending laterally thereof towards said fixed platen, said prongs being positioned on their respective platen for having an end thereof abutting the end of a prong of the opposite of said series of prongs when said platens are against said central platen, said fixed platen forming a stop for limiting the pivotal movement of said links upon being contacted by said movable platens, said first series of links each having their points of pivotal connection spaced apart for moving their respective movable platen longitudinally of said fixed platen a distance equal to the space between consecutlve prongs of each series upon the pivoting of said links through their limited movement and said second series of links each having their points of .pivotal connection spaced apart for moving their respective platen longitudinally of said fixed platen a distance equal to twice the space between consecutive prongs of each series upon the pivoting of said links through their limited movement.

2. A loose-leaf binder comprising a cover, an elongated platen fixedly mounted on the central interior portion of the back of said cover, a pair of elongated platens each movably positioned parallel to and on an opposite side of said fixed platen, two corresponding series of curved prongs adapted for receiving the loose leaves and each series extending longitudinally of one of said movable platens with each prong mounted at one end on its respective platen and extending laterally thereof towards said fixed platen, a series of similar parallel spaced apart links each pivotally connected at one end to said fixed platen and at their opposite end to one of said movable platens with the distance, longitudinally of said fixed platen, between said pivotal points being equal to onehalf the distance between two of said prongs, a second series of similar parallel spaced apart links each pivotally connected at one end to said fixed platen and at their opposite end to the other of said movable platens with the distance, longitudinally of said fixed platen, between the points of pivotal connection between each link of said second series being a multiple of the distance of pivotal connection of each link of said first mentioned series, and said prongs being positioned on their respective platen for having an end thereof abutting the end of a prong of the opposite of said series of prongs when said movable platens are against said fixed platen.

References Cited in the file of this patent UNITED STATES PATENTS 267,890 Herzberg Nov. 21, 1882 794,682 Richards July 11, 1905 1,020,561 Krumming Mar. 19, 1912 1,556,908 Briggs Oct. 13, 1925 1,927,802 McMillan Sept. 19, 1933 1,976,666 Haskin Oct. 9, 1934 2,543,866 Panfil Mar. 6, 1951 

